My Maruzen didn't need downgrading, came in at about 300fps if memory serves. Whether this would be the same for an ACM clone I'm really not sure.

Used it for nearly a full day at Spectre Urban once when my AEG died and my pistol didn't work because it was so cold. Although unlike TM shotguns that fire 3 BBs with one pump, these only fire one, so there's no rate of fire to speak of, however they're a lot more reliable than GBBs that can gas out or jam at a critical moment.

My Maruzen didn't need downgrading, came in at about 300fps if memory serves. Whether this would be the same for an ACM clone I'm really not sure.

Used it for nearly a full day at Spectre Urban once when my AEG died and my pistol didn't work because it was so cold. Although unlike TM shotguns that fire 3 BBs with one pump, these only fire one, so there's no rate of fire to speak of, however they're a lot more reliable than GBBs that can gas out or jam at a critical moment.

acm are over 350, but zeroin do the maurzen for 100, were as the acm is 75, for the sake of not screwing te gun up i prob pay the extra money,